32 citations · 103 across the 13 of their papers we have counts for
12 papers · 1 filter
Exploring the pi+ pi+ interaction in lattice QCD
H. R. Fiebig, K. Rabitsch, H. Markum +1
An effective residual interaction for a meson-meson system is computed in lattice QCD. We describe the theoretical framework and present its application to the I=2 channel S-wave i…
On the I=2 channel pi-pi interaction in the chiral limit
H. R. Fiebig, H. Markum, A. Mihaly +1
An approximate local potential for the residual pi+ pi+ interaction is computed. We use an O(a**2) improved action on a coarse 9x9x9x13 lattice with approximately a=0.4fm. The resu…
Quantum chaos and QCD at finite chemical potential
H. Markum, R. Pullirsch, K. Rabitsch +1
We investigate the distribution of the spacings of adjacent eigenvalues of the lattice Dirac operator. At zero chemical potential , the nearest-neighbor spacing distribution $P(…
Two-body spectra of pseudoscalar mesons with an --improved lattice action using Wilson fermions
H. R. Fiebig, H. Markum, A. Mihaly +2
We extend our calculations with the second-order tree-level and tadpole improved next-nearest-neighbor action to meson-meson systems. Correlation matrices built from interpolating…
Potentials between heavy-light mesons from lattice and inverse scattering theory
H. R. Fiebig, H. Markum, A. Mihaly +1
We extend our investigation of heavy-light meson-meson interactions to a system consisting of a heavy-light meson and the corresponding antiparticle. An effective potential is obta…
Quantum chaos in QCD at finite temperature
H. Markum, R. Pullirsch, K. Rabitsch +1
We study complete eigenvalue spectra of the staggered Dirac matrix in quenched QCD on a lattice. In particular, we investigate the nearest-neighbor spacing distributi…
Forces between composite particles in QCD
H. R. Fiebig, A. Mihaly, H. Markum +1
Starting from the meson-meson Green function in 3+1 dimensional quenched lattice QCD we calculate potentials between heavy-light mesons for various light-quark mass parameters. For…
Meson-meson interactions -- from static to dynamic valence quarks
H. R. Fiebig, H. Markum, A. Mihály +3
A method for the extraction of an effective meson-meson potential from Green functions, which can be obtained from a lattice simulation, is presented. Simulations are carried out f…
On the nature of the residual meson-meson interaction from simulations with a QED model
H. R. Fiebig, O. Linsuain, H. Markum +1
A potential between mesons is extracted from 4-point functions within lattice gauge theory taking 2+1 dimensional QED as an example. This theory possesses confinement and dynamical…
Extraction of hadron-hadron potentials on the lattice within 2+1 dimensional QED
H. R. Fiebig, O. Linsuain, H. Markum +1
A potential between mesons is extracted from 4-point functions within lattice gauge theory taking 2+1 dimensional QED as an example. This theory possesses confinement and dynamical…
Gluon Versus Meson Exchange in Hadron-Hadron Systems on the Lattice
H. Markum, K. Rabitsch, W. Sakuler
The interaction of spatially extended heavy hadrons is investigated in the framework of lattice QCD with dynamical quarks. In addition to the baryon-baryon potential results for th…
Baryon-Baryon Potentials on the Lattice
K. Rabitsch, H. Markum, W. Sakuler
The interaction of spatially extended heavy baryons is investigated in the framework of lattice QCD with dynamical quarks. It is shown that the expected dipole forces have a very s…